The simplest rationalizing factor of √20- √45 is​

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The simplest rationalizing factor of √20- √45 is​

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Vivian 4 weeks 2021-08-20T18:53:20+00:00 1 Answer 0 views 0

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    2021-08-20T18:54:24+00:00

    Step-by-step explanation:

     \sqrt{20}  -  \sqrt{45} \\   =  \sqrt{ {2}^{2} \times 5 }  -  \sqrt{ {3}^{2} \times 5 }  \\  = 2 \sqrt{5}  - 3 \sqrt{5} \\   =  - 1 \sqrt{5}  \\ rationalising \: factor \: is \:  \sqrt{5}

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